Marine Weather and TidesBaltimore Highlands, MD

Version 3.4

What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 7:08AM

Sunset 7:19PM

Monday March 19, 2018 11:50 PM EDT (03:50 UTC)

Moonrise 7:37AM

Moonset 8:38PM

Illumination 11%

NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

ANZ500 1031 Pm Edt Mon Mar 19 2018 Synopsis for the tidal potomac and md portion of the chesapeake bay.. Coastal low pressure will emerge and strengthen off the mid atlantic coast tonight into Tuesday. Another low pressure system will develop off the carolina coast Tuesday night, passing south of our region. High pressure will build in from the west Thursday and Friday. A small craft advisory will likely be needed for the waters Wednesday night through Thursday.

Synopsis
Low pressure over southern missouri will push across the tennessee
valley later tonight. A coastal low will develop along the mid-
atlantic coast Tuesday ahead of this main low pressure system. A
second low pressure system will develop off of the tidewater of
virginia Tuesday night and move northeast Wednesday. Canadian high
pressure returns for the latter half of the work week.

Near term until 6 am Tuesday morning
A large area of stratiform rain is pivoting across the ohio
valley this evening. Expect this to move into the area after
midnight for the western ridges, then progress eastward toward
the metros by daybreak. Precipitation should start as all rain
except over western maryland and parts of the eastern west
virginia panhandle where it will be cold enough for a wintry
mix of snow and sleet. An east-southeast flow at the surface
will gradually back around to the northeast as energy from the
western low transfers to the coast. Temperatures will be in the
lower to middle 30s for the most part. Rain amounts will
average one tenth to one quarter of an inch in northeastern
zones and one quarter to one half inch in southwestern zones.

Any ice accumulation will range from trace to a few hundredths
of an inch and be mainly over the appalachian front, eastern
west virginia and western maryland.

Short term 6 am Tuesday morning through Wednesday night
As the first storm, coastal low, develops nearshore tidewater of
virginia, a transition from a wintry mix will become more of a
snow and sleet mix Tuesday morning and continue through the
remainder of day mainly west of the blue ridge. Significant snow
and sleet accumulations are expected over the potomac highlands,
with a glaze of ice expected as well across the shenandoah
valley, blue ridge and northern maryland.

There should still be a lull in precipitation late Tuesday
afternoon into Tuesday evening but with some uncertainties as
to how long in time and coverage. Once the lull is over, an
enhancement of precipitation will start up again sometime
Tuesday afternoon and should be in the form of mainly snow. Some
sleet may mix in at times.

As it will be snowing in most areas to the north and west of the
metropolitan areas, a second coastal low will develop near the
delmarva peninsula late Tuesday into Tuesday evening. As this
low moves northeastward Tuesday night and early Wednesday, low
pressure will reside at the surface and aloft over west virginia,
helping spread snowfall across much of the cwa.

Overall we have increased precipitation amounts for our entire
cwa through Wednesday. The models have trended toward a more wet
and colder solution for the second of the two storms.

The second low will pull away from the coast on Wednesday,
bringing an end to precipitation by the evening. Temperatures
through the period will remain below normal as cold air
advection wins out along with precipitation and ample cloud
cover affecting the region.

Long term Thursday through Monday
A high pressure system will be in control of our forecast area
Thursday into Friday night allowing for dry conditions over
most of our region. Northwesterly winds during these days could
bring additional snow showers west of the allegheny front,
mainly on Thursday. A boundary and low pressure system may
affect us during the weekend bringing additional snow rain to
the area but there is still uncertainty on track and timing.

Aviation 00z Tuesday through Saturday MVFR ifr vis and CIGS expected to overtake the terminals
toward daybreak as low pressure approaches from the west,
bringing precipitation from south to north. A break in
precipitation Tuesday afternoon could provide some improving
conditions, but likely remain MVFR ifr.

Another low pressure area poised to bring wintry precipitation
to the terminals Tuesday night and early Wednesday, resulting
in continued MVFR ifr vis and cigs. Winds are expected to be
east southeast this afternoon, backing out of the north to
northeast tonight, remaining at 10 knots or less.

Vfr conditions expected over the terminals on Thursday and

Friday with high pressure in control. Breezy conditions expected
on Thursday with gusts reaching up to 20 kts. Saturday
conditions will depend on the track and timing of another low
pressure system that could affect our area.

Marine
Low pressure will move south of our area tonight and redevelop
off the coast early Tuesday. This will bring SCA conditions
across our waters starting tonight. A gale warning has been
issued for the lower chesapeake as the low strengthens and
passes to our east, delivering a strong pressure gradient over
the waters. Small craft advisories to perhaps gale warnings are
anticipated through the day Tuesday and will likely be required
through the day on Wednesday as another low pressure area
approaches the waters from the south.

Wind gusts will be above small craft criteria on Thursday,
therefore a small craft advisory is likely. Winds should remain
below criteria Friday and Saturday.

Tides coastal flooding
Two areas of low pressure will pass off the coast Tuesday and
Wednesday, resulting in prolonged onshore flow. Water levels
will be rising during this time, with minor flooding becoming
possible by Wednesday. Exact projections are still uncertain at
this time though.

Weather Map and Satellite Images

(on/off) &nbspHelpWeather MapGOES Local Image of Mid-AtlanticEDITNOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location. target = "new">Link to Loop

Wind Forecast for Baltimore, MD/Washington (23,6,7,8)

Disclaimer:The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.